WO2002070431A1 - Granulats et pieces moulees inorganiques frittes a base de carbone et/ou de composes de molybdene dans une matrice ceramique - Google Patents

Granulats et pieces moulees inorganiques frittes a base de carbone et/ou de composes de molybdene dans une matrice ceramique Download PDF

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Publication number
WO2002070431A1
WO2002070431A1 PCT/EP2002/001291 EP0201291W WO02070431A1 WO 2002070431 A1 WO2002070431 A1 WO 2002070431A1 EP 0201291 W EP0201291 W EP 0201291W WO 02070431 A1 WO02070431 A1 WO 02070431A1
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Prior art keywords
ceramic
mixture
carbon
granules
weight
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PCT/EP2002/001291
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German (de)
English (en)
Inventor
Bernd Eisenbach
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Becorit Gmbh
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Priority claimed from DE10113918A external-priority patent/DE10113918C2/de
Application filed by Becorit Gmbh filed Critical Becorit Gmbh
Publication of WO2002070431A1 publication Critical patent/WO2002070431A1/fr

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Definitions

  • the present invention relates to a process for the production of ceramic granules and molded parts and the ceramic products obtained in this way and their use, in particular in friction or brake linings of vehicles or as or in refractory materials (refractory products).
  • the present invention relates to a method for producing sintered, inorganic ceramic granules and moldings based on silicon dioxide, preferably silica fume, and at least one carbon carrier such as natural and synthetic graphites, carbon blacks, carbon fibers, electrographites or petroleum and hard coal cokes and / or molybdenum disulfide and the granules and moldings produced in this way and their use, in particular for friction or brake linings and for refractory materials (refractory products).
  • the brake pads Because of the relatively high temperatures that occur during the braking process, the brake pads have to be made of high-temperature-resistant and at the same time abrasion-resistant materials.
  • asbestos fibers were often used to manufacture them together with fillers such as barium sulfate or stone powder and a lubricant such as graphite or lead, which were bonded together by binders such as phenol-formaldehyde resins or nitrile rubbers. Because of the health-endangering effect of asbestos fibers, asbestos-free brake pads were finally developed, for example on the basis of mineral, glass, carbon, metal, acrylic or aramid fibers.
  • a typical friction or brake lining consists - apart from organic binders, organic and metallic fibers and metal powders - to a large extent of carbon carriers, such as. B.
  • the object of the present invention is to provide materials which are particularly suitable for the production of friction or brake linings and which avoid the disadvantages of the prior art described above. Furthermore, due to their properties, in particular due to their heat resistance, such materials should also be suitable for other applications, for example for refractory materials or refractory products.
  • the object according to the invention is achieved by the method according to the invention described below, which leads to materials which are particularly outstandingly suitable for the production of brake or friction linings with improved properties and for the production of refractory materials or refractory products.
  • the present invention thus relates to a process for the production of ceramic granules and molded parts, in particular for the production of friction or brake linings and of refractory materials or refractory products, which is characterized by the following process steps:
  • the raw material mixture which in addition to silicon dioxide, contains at least one carbon carrier and / or at least one inorganic molybdenum compound, in particular molybdenum disulfide, is first prepared.
  • the preparation and preparation of the raw material mixture in step (a) is generally carried out according to conventional methods.
  • the individual mixture components in particular are comminuted to the desired particle size, provided they are of different sizes, and mixed homogeneously with one another.
  • either semi-wet or preferably wet processing can be carried out under normal conditions become.
  • the semi-wet preparation all mixture components are dried, if they are not already in the dry state, then optionally comminuted, provided the particles do not already have the appropriate particle sizes, then mixed or homogenized and finally moistened for the subsequent compression and shaping, e.g. B. with water or wet steam.
  • the raw materials are wet-ground (e.g. in drum mills) if they do not yet have the appropriate particle sizes, or, for example, by stirring with water, for. B. in mixed whorls converted into aqueous suspensions.
  • the raw material mixture contains silicon dioxide and at least one carbon carrier and / or at least one inorganic molybdenum compound, in particular molybdenum disulfide.
  • a powdery, finely divided amorphous silicon dioxide is preferably used as silicon dioxide.
  • the content of amorphous silicon dioxide should be at least 85% by weight.
  • Silicon dioxide which is particularly suitable according to the invention, has an absolute density in the range from approximately 2.0 to approximately 2.5 g / cm 3 , a bulk density in the uncompressed state of approximately 200 to approximately 400 kg / m 3 or more and a bulk density in the compressed state Condition from about 450 to about 800 kg / m 3 or more.
  • Silicon dioxide preferred according to the invention contains particles, preferably of almost spherical shape, with average particle diameters of less than about 2-3 ⁇ m, in particular less than about 1 ⁇ m, preferably less than about 0.5 ⁇ m.
  • the specific surface area (BET) should be at least about 15 m 2 / g and in particular in the range from about 15 to about 30 m / g or larger.
  • silica fume silica is clearly characterized in the relevant technical literature as a technical term and refers to an ultrafine amorphous SiO 2 dust that arises in particular in the production of silicon metal and ferrosilicon alloys as a by-product of the melting / reduction process. Characteristic for silica fume is the high amorphous Si0 2 content of about 85 to about 98% by weight.
  • the particle sizes of silica fume are generally in the range from about 0.1 to about 0.2 ⁇ m with an almost spherical shape. In addition, due to the small particle size, there is an extraordinarily good reactivity and associated very high strength values in the ceramic-fired end products.
  • silica fume is therefore used as a reactive inorganic material in order to produce a ceramic sintered matrix.
  • Silica fume which is suitable according to the invention is sold, for example, by Elkem Materials under the name “Elkem Microsilica ® " and by Fesil Silica AS.
  • the content of silicon dioxide in the starting or raw mixture can vary within wide limits.
  • the silicon dioxide content in the starting mixture is 10 to 95% by weight, in particular 15 to 90% by weight, preferably 20 to 85% by weight, based on the total weight of the starting mixture.
  • the starting mixture also contains at least one carbon carrier and / or at least one inorganic molybdenum compound, in particular molybdenum disulfide.
  • the carbon carrier is generally a mixture component consisting essentially of carbon.
  • Carbon carriers suitable according to the invention are selected in particular from the group of graphites such as natural and synthetic graphites, in particular in the form of graphite flakes and / or graphite dust (eg electrographite), carbon blacks of all types, carbon fibers, cokes such as B. carbonized coke from the coal or petroleum industry (e.g. petroleum or hard coal coke) and mixtures of the aforementioned compounds.
  • the content of carbon carrier (s) in the starting or raw mixture can vary within wide limits. Generally the content is Carbon carrier (s) in the starting mixture 2 to 50 wt .-%, in particular 5 to 40 wt .-%, preferably 5 to 30 wt .-%, based on the total weight of the starting mixture.
  • the starting mixture contains an inorganic molybdenum compound, in particular a molybdenum mineral or molybdenum ore, preferably ' molybdenum disulfide (MoS 2 , molybdenite, molybdenum luster) is used.
  • Molybdenum disulfide is the most common molybdenum mineral and at the same time the most technically significant molybdenum ore. It is characterized in particular by its sliding properties caused by the layered grid and similar to graphite.
  • the content of inorganic molybdenum compound, in particular molybdenum disulfide, in the starting or raw mixture can vary within wide limits.
  • the content of inorganic molybdenum compound, in particular molybdenum disulfide, in the starting mixture is up to 30% by weight, in particular up to 15% by weight, preferably up to 10% by weight, particularly preferably up to 8% by weight , based on the total weight of the starting mixture.
  • At least one inorganic oxidic raw material and / or mineral component can also be added to the starting mixture.
  • oxidic raw materials and / or mineral constituents are intended, in particular, to react or sinter during the ceramic firing with the silicon dioxide, preferably silica fume, or to be supplied as a friction lining constituent in a form of the starting mixture or the offset, so that they only exist as sintered, coarse components in the reactive basic matrix.
  • silicon dioxide preferably silica fume
  • those oxidic raw materials or mineral constituents are preferably used which can react with the silicon dioxide or can co-form the ceramic matrix, i. H. sinter with the matrix.
  • Inorganic materials and / or oxidic mineral mixtures for producing the granules and moldings according to the invention are preferably finely ground, synthetic and natural raw materials are used which are available as processed raw materials.
  • raw materials are used that are currently used in friction linings. Essentially, these are the following substances: sintered clays, tabular clays, fused corundum (so-called high-grade corundum), normal corundum
  • the content of inorganic oxidic raw material and / or mineral component in the starting mixture can vary within wide ranges.
  • the content of inorganic oxidic raw material and / or mineral constituent in the starting mixture is 5 to 70% by weight, in particular 10 to 65% by weight, preferably 15 to 60% by weight, based on the total weight of the starting mixture ,
  • rock powder inorganic fibers such as quartz glass fibers, aluminum oxide fibers, glass fibers, aluminum silicate fibers or basalt fibers, rock wool, slags, fly ash, glasses, frits, cements such as alumina cement and Portland cements can also be added to the starting mixture.
  • inorganic fibers such as quartz glass fibers, aluminum oxide fibers, glass fibers, aluminum silicate fibers or basalt fibers, rock wool, slags, fly ash, glasses, frits, cements such as alumina cement and Portland cements can also be added to the starting mixture.
  • the granules and moldings according to the invention can also be used
  • Contain carbides and nitrides such as silicon carbide, silicon nitride, boron carbide, boron nitride, titanium carbide, etc. These can either be directly gear mix are added to or be generated situ starting from suitable starting compounds in the ceramic firing in ⁇ .
  • the starting mixture comprises particles of the respective mixture components, the average particle diameter of which - in the case of the matrix-forming materials, in particular silicon dioxide and, if appropriate, the oxidic raw materials and / or mineral components, if available - at most 0. 2 mm and in particular ⁇ 100 ⁇ m, preferably ⁇ 50 ⁇ m or less.
  • the other components of the mixture in particular the carbon carrier and, if appropriate, further additives and fillers (e.g.
  • stone powder, etc. can also have significantly larger, average particle diameters or particle sizes of up to 10 mm, in particular up to 5 mm, preferably up to 1 mm, particularly preferably up to 0.5 mm and smaller, without this having a substantial effect on the wear resistance of the products.
  • the individual mixture components should not be able to be dissolved under the process conditions.
  • plasticizers plasticizers, dispersants and / or binders (e.g. permanent or temporary binders).
  • the dry batch or the dry starting mixture for processing is moistened with water and, if necessary, mixed with process aids known per se (such as plasticizers, dispersants, liquefiers and temporary binders).
  • process aids such as plasticizers, dispersants, liquefiers and temporary binders.
  • binders suitable according to the invention sodium, potassium and / or lithium water glasses, silica sols, natural and synthetic amorphous silicas, Portland cements, alumina cements, phosphates, in particular alkali and alkaline earth phosphates and monoaluminum phosphate, borates, boric acid, clays, kaolin, metakaolin, aluminum hydroxide, calcium hydroxide, magnesium sulfate, magnesium chloride, magnesium hydroxide, aluminum hydroxide - minium hydroxychloride, sodium aluminate and zirconium oxychloride, zirconium acetate and phosphate.
  • suitable temporary binders according to the invention include all compounds which are known per se to the person skilled in the art, in particular temporary binders based on organic compounds such as, for example, B. lignin sulfonates, methyl celluloses, gelatin etc.
  • Process step (a) is then followed in process step (b) of the process according to the invention by compression and, if appropriate, shaping of the mixture obtained in step (a).
  • step (b) The compression and the shaping in step (b) are carried out according to conventional granulation and compacting methods known per se and conventional shaping methods.
  • Compression and shaping are preferably carried out in one step, in particular by extrusion. However, it is also possible to carry out the compaction (compacting) and the shaping separately.
  • compression and / or shaping processes may be mentioned purely by way of example: extrusion (extrusion), pelletizing (e.g. using a pelletizing plate), spray drying, pressing (e.g. dry pressing or isostatic pressing with granules), granulation, casting ( e.g. injection molding) etc.
  • Process step (b) is then followed in process step (c) of the process according to the invention by drying the mixture which has been compressed and optionally shaped in step (b).
  • the drying parameters are not critical.
  • the compressed and optionally shaped mixture is dried at temperatures from 50 ° C. to 300 ° C.
  • the drying time is between 0.5 and 10 hours, in particular between 1 and 5 hours, preferably between 1 and 3 hours.
  • drying takes place under atmospheric pressure; however, the drying can optionally be carried out under reduced pressure or in vacuo by ⁇ g % .
  • Process step (c) is finally followed in process step (d) of the process according to the invention by the ceramic firing of the mixture dried in step (c).
  • Steps (c) and (d) can merge into one another continuously or continuously, e.g. B. by continuously increasing the temperature.
  • step (c) The ceramic firing of the mixture dried in step (c) takes place under conditions such that there is no or essentially no oxidation of the carbon and / or the inorganic molybdenum compound, in particular the molybdenum disulfide, reacts with the other constituents of the mixture and at the same time a ceramic or chemical solidification of the mixture is achieved by sintering, so that the carbon carrier and / or the inorganic molybdenum compound are embedded in a ceramic sintered matrix based on silicon dioxide.
  • the ceramic sintered matrix is thus formed from the silicon dioxide and optionally the inorganic oxidic raw material or mineral component, as previously defined, by ceramic sintering, the carbon carrier and / or the inorganic molybdenum compound, in particular molybdenum disulfide, preferably in a homogeneous distribution this matrix are stored.
  • the ceramic firing in step (d) of the process according to the invention is carried out in a closed system largely shielded from oxygen, in particular atmospheric oxygen.
  • the ceramic fire in step (d) is carried out under inert or reduced the or non-oxidizing conditions, in particular with exclusion of atmospheric oxygen, preferably in a vacuum or under a protective gas atmosphere.
  • atmospheric oxygen preferably in a vacuum or under a protective gas atmosphere.
  • hydrogen, nitrogen, ammonia gas and or noble gases can be used as protective gases.
  • the granules and moldings according to the invention are therefore preferably fired under protective gas or under reduced pressure or in vacuo, ie. H. under conditions in which there is no substantial oxidation of the carbon and a reaction of the inorganic molybdenum compound, in particular the molybdenum disulfide, with the other constituents of the mixture occurs, but at the same time a ceramic or chemical solidification of the mixture by sintering or by chemical bonding of the inorganic materials or the oxidic mineral mixtures is reached.
  • the granules or moldings are therefore under a protective gas such as B. hydrogen, nitrogen, ammonia gas and noble gases, or in vacuo, d. H.
  • This system can also consist of a granular electrographite, a natural graphite flake or a refractory container filled with granular, carbonized coke from the coal or petroleum industry - hereinafter referred to as the "embedding process" - in which the carbon-containing granules or foils are embedded are so that neither a vacuum is created nor a separate protective gas has to be supplied. Combinations of inert gas and embedding processes are also possible.
  • the ceramic firing in step (d) of the process according to the invention is carried out at temperatures from 700 ° C. to 1,700 ° C., in particular 900 ° C. to 1,500 ° C., preferably 1,000 ° C. to 1,350 ° C.
  • the duration is generally 0.5 to 6 hours, in particular 1 to 5 hours, preferably 1.5 to 4.5 hours.
  • molybdenum disulphide and / or carbon in particular in the form of natural or synthetic graphites, can be made into a ceramic matrix, which consists to a considerable extent of sintered or ceramic-fired silicon dioxide, preferably silica fume Carbon black, carbon fiber and carbonized Coke from the hard coal or petroleum industry can also be incorporated in larger quantities. It is therefore necessary to produce ceramic granules or molded parts under "inert or reducing sintering conditions". This can be achieved by firing the shaped mixture of molybdenum disulfide and / or carbon carrier (s) and optionally oxidic inorganic materials under protective gases and / or in a largely closed so-called "carbon bed” (embedding process).
  • carbon bed embedding process
  • silica fume Due to the small particle size, silica fume has an extremely good reactivity, which leads to very high strength values in the ceramic-fired end products.
  • the present invention thus also relates to ceramic granules and moldings which can be obtained by the process according to the invention described above.
  • ceramic granules and moldings which have at least one carbon carrier and / or at least one inorganic molybdenum compound, in particular molybdenum disulfide, embedded — preferably in a homogeneous distribution — in a ceramic matrix based on sintered or ceramic-fired silicon dioxide, preferably Silica fume, the granules and moldings according to the invention optionally also containing further ingredients.
  • the content of carbon and / or molybdenum disulfide in the products according to the invention is in particular in the range from 2 to 50% by weight.
  • the figures show - by way of example and illustration - microscopic enlargements of ceramic products according to the invention. It shows:
  • 1 is a 1,250-fold microscopic magnification of a ceramic matrix based on silica fume and natural as well as synthetic, inorganic oxidic raw materials or mineral components, in which graphite and molybdenum disulfide are embedded, homogeneously distributed.
  • FIG. 2 shows a 500-fold microscopic enlargement of a ceramic matrix based on silica fume and natural as well as synthetic, inorganic oxidic raw materials or mineral components, in which graphite flakes are embedded, homogeneously distributed.
  • FIG. 3 shows a 150-fold (left figure) or 880-fold (right picture) microscopic enlargement of a ceramic matrix based on silica fume and natural as well as synthetic, inorganic oxidic raw materials or mineral components, in which, homogeneously distributed, carbon fibers are embedded.
  • various types of carbon carriers and molybdenum disulfide can be incorporated into a ceramic matrix based on sintered or ceramic-fired silica fume and ceramic-forming, inorganic oxidic raw materials or minerals by the process according to the invention.
  • the result is very temperature-resistant and highly abrasion-resistant ceramic products, which are particularly suitable for the production of friction or brake pads.
  • the present invention also relates to the use of the ceramic granules and molded articles according to the invention for the production of friction or brake linings and the friction and brake linings produced in this way themselves.
  • the friction or brake linings can consist entirely of the molded bodies according to the invention, for example.
  • the molded bodies must be shaped into the shape of the friction or brake linings before and / or after the ceramic fire. be brought.
  • the foam body or granules according to the invention can also be incorporated into the friction or brake pads, e.g. B. together with known fillers or binders (z. B. organic binders such as phenol-formaldehyde resins or nitrile rubbers, which can hold the moldings or granules of the invention together in a block).
  • the present invention also relates to the use of the ceramic granules and molded articles according to the invention for the production of refractory materials or refractory products and the refractory materials or refractory products themselves produced in this way.
  • refractory materials or "refractory products” is used here in particular as a collective term for non-metallic materials
  • refractory materials or refractory products are, in particular, shaped, burned or unburned (chemically bound), less often melt-cast stones or unshaped products that can be used either directly as delivered or after adding a liquid, e.g. B. as high temperature materials.
  • Major customers for refractory materials and refractory products are, for example, the iron and steel industry, furthermore the glass, cement, lime and porcelain industry as well as the furnace and stove industry (e.g. for refractory lining).
  • the granules obtained in this way can be further processed and, for example, broken down into granules such as are used, for. B. are required for the processing of brake pads. It is also possible to replace the electrode graphite with graphite dust and to press the plastic mass through a narrow nozzle of approximately 0.1 cm in diameter, producing ceramic parts which, according to the firing and preparation conditions described above, are given as solid, stalky to fibrous pens become. Such ceramic molded parts can, for example, have a reinforcing effect in friction linings. Furthermore, these products can be used for refractory materials or refractory products.
  • Example 2 Example 2:
  • a molded body is pressed after adding conventional process chemicals and water to a plate in the dimensions of a brake pad.
  • the molded body is then fired in a bed - consisting of granular electrographite - which is poured into a fire-proof wall to protect against the influence of oxygen and sealed by a hermetically sealed cover. After a fire at 1300 ° C for four hours, a molded body is obtained which contains molybdenum disulfide and graphite dust or graphite dust / electrographite in the sintered ceramic matrix.
  • the molded body can be used as a friction or brake pad.
  • the strands which are approximately 2 to 3 cm long, are dried and then fired at 1250 ° C. for four hours in a refractory crucible flushed with nitrogen and filled with electrographite.
  • the granules that are solid after firing mainly consist of pseudo woolastonite with graphite flakes embedded in the ceramic matrix. It is also possible to enrich these granules with natural and synthetic raw materials.
  • about 20% by weight of a natural, fibrous wollastonite raw material (aspect ratio 17: 1) was added to the mixture and fired in the manner described above.
  • Coarser raw materials of fine corundum (grain size 0.1 to 0.5 mm), melted magnesia (grain size 0.1 to 0.3 mm), sintered magnesia (grain size 0.1 to 0.5 mm) and baked bauxite were produced in the same way (Grain size 0.1 to 0.5 mm), zircon sand (grain size 0.1 to 0.3 mm), garnet (grain size 0.1 to 0.3 mm), andaluite (grain size 0.1 to 0) , 5 mm) or potassium feldspar (grain size 0.1 to 0.3 mm) are added to the above mixture and appropriate granules are produced at partially changed firing temperatures and firing times.
  • the flake graphite in the basic batch listed above can also be replaced, for example, by carbon fibers, graphite dust, by coarse electrographite (0.2 to 1.5 mm), petroleum or hard coal coke, or be blended with it. It is also possible to add molybdenum disulfide to the batch and to burn it in a corresponding manner, as described above.
  • the amount of carbon carriers and molybdenum disulfide is also variable.
  • Technically interesting quantities are in particular in the range from 5 to 20% by weight in the fired mass or the fired granules.
  • Example 4 The granules described and produced above can then be processed and brought into a grain size appropriate for the production of the friction lining.
  • Example 4 The granules described and produced above can then be processed and brought into a grain size appropriate for the production of the friction lining.
  • the very solid molded body thus obtained contains - as was determined by X-ray analysis - predominantly anorthite and graphite.
  • the mass can be modified, for example, by other temperature-stable compounds and minerals.
  • the mixture can also be modified such that alumina cement is used instead of Portland cement, with wollastonite flour, in combination with silica fume, likewise leading to anorthite.
  • the granules are fired in an electrographite bed at 1450 ° C. with the exclusion of air.
  • the solidified spray granules mainly contain forsterite and graphite on mineral phases. With excess magnesium carbonate or with the addition of melting or sintered magnesia, granules with forsterite, periclase and graphite are obtained.
  • the sintered granules can in particular be processed directly in friction linings.
  • the hard resulting ceramic contains MoS 2 and anorthite.
  • Very hard ceramic parts are obtained which can be used, for example, as granules for friction linings.
  • silica fume 29.0% by weight of silica fume and 48.0% by weight of nepheline (syenite flour, particle size ⁇ 44 ⁇ m)
  • Both the molybdenum disulfide-containing, hard ceramic material itself and mixtures that are enriched with fused corundum or with mullite or with baked bauxite or with zirconium silicate grains in the grain area from 0.1 to 0.3 mm can be after the ceramic firing (e.g. B. in the embedding process) and appropriate preparation can be used as an additive for friction linings.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

L'invention concerne un procédé de fabrication de granulats et de pièces moulées en céramique ainsi que les produits céramiques obtenus par ce procédé et leur utilisation, en particulier sur des garnitures de friction et de frein pour véhicules et matériaux ou produits réfractaires. Cette invention concerne en particulier un procédé de fabrication de granulats et de pièces moulées en céramique inorganique frittée à base de dioxyde de silicium, de préférence de fumées de silice, ainsi que de porteurs de carbone tels que des graphites naturels et synthétiques, du noir de carbone, des fibres de carbone, des électrographites ou du coke de pétrole et de houille et/ou à base de bisulfure de molybdène. Ledit procédé permet l'obtention de granulats et pièces moulées inorganiques frittés à base de carbone et/ou de composés de molybdène dans une matrice céramique à base de dioxyde de silicium fritté, soumis à une cuisson céramique.
PCT/EP2002/001291 2001-03-07 2002-02-07 Granulats et pieces moulees inorganiques frittes a base de carbone et/ou de composes de molybdene dans une matrice ceramique WO2002070431A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10111003.0 2001-03-07
DE10111003 2001-03-07
DE10113918.7 2001-03-21
DE10113918A DE10113918C2 (de) 2001-03-07 2001-03-21 Gesinterte anorganische Granulate und Formkörper auf Basis von Kohlenstoff und/oder Molybdänverbindungen in einer keramischen Matrix, deren Herstellung sowie deren Verwendung

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342932A2 (fr) * 2002-03-07 2003-09-10 Sgl Carbon Ag Matériau céramique pour garnitures de friction
EP2412692A3 (fr) * 2010-07-28 2012-07-25 Brembo SGL Carbon Ceramic Brakes GmbH Procédé de fabrication d'une composition de matériau contenant des fibres, cette composition de matériau et pièce usinée
CN105402292A (zh) * 2015-12-16 2016-03-16 上海理工大学 一种汽车刹车片及其制备方法
CN107721442A (zh) * 2017-10-30 2018-02-23 孝义市和中兴矿产有限公司 一种高强度高荷软中铝合成料及其制备方法
CN109608092A (zh) * 2019-01-18 2019-04-12 重庆红宇摩擦制品有限公司 用于制作汽车制动衬片的摩擦材料及其制备方法
CN110194665A (zh) * 2019-07-18 2019-09-03 平顶山市信瑞达石墨制造有限公司 一种石墨炊具及其制备工艺
CN109719114B (zh) * 2018-12-13 2020-12-01 淮北阳晖科技有限公司 一种炼铝冶炼炉炉渣再利用工艺
CN115536396A (zh) * 2022-10-14 2022-12-30 广州市拓道新材料科技有限公司 一种高耐磨的二氧化硅/碳化硅复合陶瓷及其制备方法和应用
CN116589261A (zh) * 2023-06-27 2023-08-15 山东高速材料技术开发集团有限公司 一种利用赤泥的改性低收缩低碳胶凝材料及其制备方法

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DE102009009131B4 (de) * 2009-02-17 2012-10-04 Tmd Friction Services Gmbh Verfahren zur Herstellung eines Bremsbelages, Bremsbelag
EP2908083A1 (fr) * 2014-02-13 2015-08-19 Ald Vacuum Technologies GmbH Utilisation d'un matériau comprenant un mélange comprimé de graphite et de verre pour le refroidissement
RU2742572C1 (ru) * 2020-02-24 2021-02-08 Общество С Ограниченной Ответственностью "Ника-Петротэк" Способ изготовления магнезиально-силикатного проппанта и его состав

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EP0469464A2 (fr) * 1990-08-02 1992-02-05 Miba Frictec GmbH Garniture de friction et procédé de fabrication

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US4792361A (en) * 1986-08-08 1988-12-20 Cemcom Corp. Cementitious composite friction compositions
EP0469464A2 (fr) * 1990-08-02 1992-02-05 Miba Frictec GmbH Garniture de friction et procédé de fabrication

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342932A2 (fr) * 2002-03-07 2003-09-10 Sgl Carbon Ag Matériau céramique pour garnitures de friction
EP1342932A3 (fr) * 2002-03-07 2004-11-10 Sgl Carbon Ag Matériau céramique pour garnitures de friction
US7799250B2 (en) 2002-03-07 2010-09-21 Audi Ag Ceramic materials for friction linings
EP2412692A3 (fr) * 2010-07-28 2012-07-25 Brembo SGL Carbon Ceramic Brakes GmbH Procédé de fabrication d'une composition de matériau contenant des fibres, cette composition de matériau et pièce usinée
CN105402292B (zh) * 2015-12-16 2018-07-06 上海理工大学 一种汽车刹车片及其制备方法
CN105402292A (zh) * 2015-12-16 2016-03-16 上海理工大学 一种汽车刹车片及其制备方法
CN107721442A (zh) * 2017-10-30 2018-02-23 孝义市和中兴矿产有限公司 一种高强度高荷软中铝合成料及其制备方法
CN109719114B (zh) * 2018-12-13 2020-12-01 淮北阳晖科技有限公司 一种炼铝冶炼炉炉渣再利用工艺
CN109608092A (zh) * 2019-01-18 2019-04-12 重庆红宇摩擦制品有限公司 用于制作汽车制动衬片的摩擦材料及其制备方法
CN110194665A (zh) * 2019-07-18 2019-09-03 平顶山市信瑞达石墨制造有限公司 一种石墨炊具及其制备工艺
CN115536396A (zh) * 2022-10-14 2022-12-30 广州市拓道新材料科技有限公司 一种高耐磨的二氧化硅/碳化硅复合陶瓷及其制备方法和应用
CN116589261A (zh) * 2023-06-27 2023-08-15 山东高速材料技术开发集团有限公司 一种利用赤泥的改性低收缩低碳胶凝材料及其制备方法
CN116589261B (zh) * 2023-06-27 2024-01-26 山东高速材料技术开发集团有限公司 一种利用赤泥的改性低收缩低碳胶凝材料及其制备方法

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